Mast lift base



FIG. 1 is a front perspective view of the mast lift base according to the present invention with the platform in a raised position;

FIG. 2 is a rear perspective view thereof with the platform in a lowered position;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The portions of the figures shown in dashed lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a mast lift base, as shown and described. 